Supporting standard for cylinder hones



Aug. 6, 1929-.

E. A. HALL SUPPORTING STANDARD FOR CYLINDER HONES Fi led Aug. 20,. 1928 Patented Aug. 6, 1929.

UNITED STATES PATENT OFFICE.

ERNEST A. HALL, OF TOLEDO, OHIO, ASSIGNOR TO THE HALL MANUFACTURING COM- PANY, OF TOLEDO, OHIO, A CORPORATION OF OHIO.

SUPPORTING STANDARD FOR CYLINDER EONES.

Application filed August 20, 1928. Serial No. 300,880.

This invention relates to tool supports but more particularly to supports for cylinder hones of the type employed in grinding the cylinders of internal combustion engines.

The use of supports or standards for cylinder hones has been discouraged by factory engineers and others because they do not enable the operator to feel the operation of the tool during the work period. This is considered an important factor for accurate cylinder reconditioning.

An object of this invention is to provide a sturdy and durable supporting standard for tools, such as cylinder hones, which is adjustable and enables the operator to perceive physically the manner of operation of the tool supported thereby. Other objects will hereinafter appear.

The invention is shown by way of illustration in the accompanying drawings in which,

The figure is a perspective of a standard for a cylinder hone showing the same mounted on the cylinder block of an auto- 2 mobile. H

The-illustrated embodiment of this invention comprises an automobile A, having a cylinder block 1, the head being removed to enable the supporting base 2 of the cylinder hone standard to be mounted thereon, thereby to permit access to the cylinders for the purpose of grinding. The supporting base 2 is T-s'haped and is provided with three elongate slots 3 to permit bolts and nuts 4 to connect the base to the cylinder block 1 through the apertured bosses 5. Integral with the base 2 is an upright post 6 which supports the standard or post 7.

Encircling the post 7 is a split ring 8 having an adjustable screw 9 to tighten the same on the post. The ring 8 supports a swivel member 10 with which a laterally extending split boss 11 is integral. The arm 12 is adjustable in the boss 11 and may be fixed in adjusted position by tightening a screw 13 to clamp the split portions of the boss together.

Near the outer end of the arm 12 depends a hook 14: to which is attached a coil spring 15. At the outer end of the coil spring 15 is a hook 16, which is adapted to engage and resiliently support an electrically driven rotator 17 for operating the cylinder hone 18.

The outer end of the arm 12 is forked, and

pivoted by a pin 19 to the fork is a guide 20. A rod 21 is slidable in the guide and the lower end thereof is pivoted at 22 to the hook 16. The outer end portion of the rod 21 is screw-threaded at 23 to receive a stop nut 24. It is apparent that the nut 2% engaging the guide 20 serves as a stop for limiting the downward or expanding movement of the coil spring 15. The nut 24L may be adjusted to regulate the extent of the downward movement of the tool.

Attached to the upright post 7 is a container 25 to receive a mixture of kerosene and cylinder oil, which is fed to the cylinder to be ground through a tube 26, a valve 27 regulating the flow from the container.

From the above description, it is manifest that the cylinder hone is yieldingly supported from a standard, so that the operator is enabled to feel or physically perceive the manner in which the cylinder hone is operating so that accurate grinding of the cylinders may be secured. This construc tion also lends itself admirably to working on cylinders without removing the cylinder block from the frame, inasmuch as the tool is conveniently supported in position for use. The adjustable features of the standard permit the tool to be adjusted to the position desired and renders it useful in connection with machines of different sizes.

While I have described the standard in connection with cylinder hones, it is to be understood that it may also be used to advantage in other connections and numerous changes in details of construction and ar rangement may be effected without departing from the spirit of the invention.

WVhat I claim is:

1. A support for cylinder hones comprising a base, means for detachably securing the base to the cylinder block on which work is to be performed, an upright rising from said base, an arm extending outwardly from said upright, a coil spring depending from said arm, a hook on the lower end of said spring to engage the cylinder hone driving means. a guide member pivoted to the outer end of said arm, a rod slidable in said guide and having one end pivoted to said hook, and an adjustable stop on said rod thereby to limit the expanding movement of said coil spring.

2. A support for cylinder hones comprismg a base, means for securing said base in position, an upright rising from said base, a collar adjustable on said upright, a member rotatable on said upright and supported by said collar, said member having a longitudinally disposed opening, an arm in said opening, means to secure said arm in adjusted position, a coil spring depending from said arm, a hook in the lower end of said spring, a guide pivotedto the outer end portion of said arm, a rod slidable in said guide and 10 In testimony WhereofI have hereunto 15 signed my name to this specification.

ERNEST A. HALL. 

